# Radial flows and angular momentum conservation in Galactic chemical evolution

@article{Bilitewski2012RadialFA,
title={Radial flows and angular momentum conservation in Galactic chemical evolution},
author={Thomas Bilitewski and Ralph Schonrich},
journal={Monthly Notices of the Royal Astronomical Society},
year={2012},
volume={426},
pages={2266-2282}
}
• Published 31 July 2012
• Physics
• Monthly Notices of the Royal Astronomical Society
We study the effects of radial flows on Galactic chemical evolution. A simple analytic scheme is developed prescribing the coupling of infall from the intergalactic medium and radial flows within the disc based on angular momentum conservation. We show that model parameters are tightly constrained by the observed [Fe/H]-abundance gradient in the Galactic disc. By this comparison the average rotational velocity of the onfalling material can be constrained to 0.7 ≤ v/Vc ≤ 0.75, or respectively… Expand
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#### References

SHOWING 1-10 OF 29 REFERENCES
Chemical evolution of the galactic disk with radial gas flows.
• Physics
• 1985
We present a series of models for the chemical evolution of the galactic disk with radial inflows of the gas at a velocity that is constant in time but may vary with galactocentric radius. The modelsExpand
Effects of the radial flows on the chemical evolution of the Milky Way disk
Context. The majority of chemical evolution models assume that the Galactic disk forms by means of infall of gas and divide the disk into several independent rings without exchange of matter betweenExpand
Supernova-driven gas accretion in the Milky Way
• Physics
• 2011
We use a model of the Galactic fountain to simulate the neutral-hydrogen emission of the Milky Way Galaxy. The model was developed to account for data on external galaxies with sensitive H i data.Expand
• Physics
• 2009
Models of the chemical evolution of our Galaxy are extended to include radial migration of stars and flow of gas through the disc. The models track the production of both iron and α-elements. A modelExpand
Accretion of gas on to nearby spiral galaxies
• Physics
• 2008
We present evidence for cosmological gas accretion onto spiral galaxies in the local universe. The accretion is seen through its effects on the dynamics of the extra-planar neutral gas. The accretionExpand
Galactic fountains and the rotation of disc-galaxy coronae
• Physics
• 2011
In galaxies like the Milky Way, cold (˜104 K) gas ejected from the disc by stellar activity (the so-called galactic-fountain gas) is expected to interact with the virial-temperature (˜106 K) gas ofExpand